Genie Patron (Djinni)

It's rare, but there are those on the Material Plane who reach out to the Genies in the Elemental Planes and end up striking a deal. The Djinn are the easiest to approach, amenable and largely fair to mortals. In exchange for a kind of friendship, occasional tributes, and shared acclaim and glory with the Warlock, said Warlock receives power from the Plane of Air and strange favors from fate.

Example Noble Djinn that could be your Patron: Calim, Nafas, Husam al-Balil ben Nafhat al-Yugayyim.

 

Level 3: Light as Air

Once per day, you can gain a Fly Speed of 30 ft for up to 10 minutes with concentration. While flying, it appears that a mist or cloud envelops your lower half that suspends you in the air.

Level 3: Primordial Vessel

Your patron grants you a vessel with which to harness the raw power of the elemental chaos. It is a tiny object, and you can use it as a Spellcasting Focus for your Warlock spells. You determine its form by rolling on the Primordial Vessel table or by choosing one.

Vessel Statistics. The vessel has an AC equal to your spell save DC and hit points equal to your Warlock level. The vessel is immune to poison and psychic damage. 

Bottled Respite. While holding the vessel, you can use a Magic action to vanish and enter your primordial vessel. The vessel remains in the space you last occupied unless it is moved by some outside force. You remain in the vessel for a number of hours equal to your Warlock level or until the vessel is destroyed or you die. You can also use a bonus action to exit the vessel early. When you exit the vessel, you appear in the nearest unoccupied space to it. Once you exit the vessel, you cannot enter it again until you finish a long rest. 

Noble Comforts. The interior of the vessel is an extradimensional space in the shape of a 20-foot-radius, 20-feet-high cylinder. The interior of the vessel resembles your vessel's exterior, though it has decorations reminiscent of the vessel's decorations (such as cushions and low tables), and remains at a comfortable temperature regardless of the environment outside.

Extraplanar Storage. You can store objects in the vessel. Any objects not worn or carried on your person when you exit the vessel remain in the vessel until you carry them out. If the vessel is destroyed, the objects stored within appear harmlessly in the nearest unoccupied spaces closest to where the vessel formerly was. 

Listening Servant. While within the vessel, you are able to hear as though you were in the space the vessel occupies. 

 Example Vessels:

1d6	Vessel Form
1	A decorated oil lamp with iconography of your patron's domain
2	An urn decorated with stones matching your patron's home plane
3	A ring inlaid with gemstones which conceal a compartment
4	An iron flask decorated with enameled murals
5	A hollow statuette or figurine depicting your patron
6	An ornate lantern with stained glass iconography of your patron

 

If you lose the vessel, you can perform a 1-hour ceremony to request a replacement from your patron. This ceremony can be performed during a Short or Long Rest, and it destroys the previous vessel

(Credit to user Aech2941 for this feature and its details)

Level 3: Djinni Spells

The magic of your patron ensures you always have certain spells ready; when you reach a Warlock level specified in the Djinni Spells table, you thereafter always have the listed spells prepared.

Djinni Spells

Warlock Level	Spells
3	Augury, Suggestion, Blur, Gust of Wind, Levitate, Lightning Bolt
5	Conjure Elemental, Songal's Elemental Suffusion
7	Planar Ally, Reverse Gravity
9	Storm of Vengeance, Wish

Level 6: I Wish...

You extend your will on the universe, and it extends its own on you in turn. When you or an ally within 60ft makes an ability check or saving throw, you can lower the DC of the check by 5, 7, or 10. To do this, roll on the Wild Magic Table. Lowering the check by 7 adds 15 to your roll, and lowering it by 10 adds 30.

You can use this feature a number of times equal to half your Charisma modifier, rounded down (minimum of once). You regain all expended uses when you finish a Long Rest.

Level 10: Djinni Resistance

Once per day, when hit with an attack, you can choose to be pushed back 30ft and take no damage.

Level 14: Djinni's Favor

When an attack lands that does Lightning damage, you can choose to roll max damage a number of times equal to your Charisma Modifier per Long Rest.

In addition, for one time only, when you hit 0 hit points and fail your death saves, instead of dying, your body and soul are taken to the Elemental Plane of Air to your Patron and restored to full health.